Fire-alarm



A. KRA'STIN. FIRE ALARM (N0 Model.)

No. 505,834. Patented 001;l 311893;#`

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dln/M2 UNITED STATES PATENT OFFICE.

AUGUST KRASTIN, OF CLEVELAND, OHIO.

Fl RE-ALARM.

SPECIFICATION forming part of Letters Patent No. 505,834, dated October 3, 1893.

Application led January 6, 1893.

To LZZ whom, it may concern:

Be it known that I, AUGUST KRASTIN, a citizen of Russia, and a resident of Cleveland, county of Cuyahoga, State of Ohio, have invented certain new and useful Improvements in Fire-Alarms, of which I hereby declare the following to be a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in fire alarms, and is adapted to be placed in any well exposed position in apartments in dwelling houses or hotels, and connect with alarm signals in a main office whereby any sudden combustion in any part of a building may be signaled and located at once before it has had time to spread.

My invention further consists in the combination and arrangement of parts and construction of details as hereinafter described, shown in the accompanying drawings, and more specifically pointed out in the claims.

In the accompanying drawings Figure 1 is a perspective view of the device attached near a window casing in the vicinity of the curtains and gas jet, and also showing battery and signal bell in oice. Fig. 2 shows details of head and attaching cord. Fig. 3 is a vertical central section of depending head, and Fig. 4 of the fastener.

In the drawings A is the alarm device or head consisting in the spring clips B B provided with serrated meeting edges b b and rigidly held between the insulating disks C and D of ber or vulcanite, the whole having a neat compact appearance. The current wires F F are inserted in perforations ff and 'turned under atff to make contact with the bent in extremities b b' of the clips B. A screw E secures the parts limly together.

0c is a combustible or preferably fusible slip of material inserted between the clips B B and tightly held therein until touched by iiame or overheated when it will at once be consumed and make contact between the clip extremities thus opening the circuit through the wall wires and battery and ringing the bell K. The object of making the contact ledges of the clips serrated is as will be readily seen, to make them self-cleaning from the Serial No. 457,529. (No model.)

burned mattei' remaining on them after the combustion of the fuse, since on coming together, the points will scrape each oth er clean. This would not be done if they were straight edges.

A is a fastening device secured to the wall or ceiling wherever desired if it is desired to arrange thedevice as a pendant and consists in the clamping plates G and H made of insulating material, the upper one Gr being perforated and grooved for the insertion of the wires. An additional metal plate I is threaded to receive the screw .I which is elongated to fasten into the wall or woodwork.

F F are the wall connections of the circuit.

K is a bell on the circuit and L is a battery'. The bell and battery are placed in a convenient place, as in the office of a building, and the device wherever desired.

In practice in large buildings, as hotels, a large number of alarms may be employed, connected with as many bells-each bell having a number corresponding to the number of the room containing the alarm connected therewith, so that an attendant can tell at a glance just where a lire has originated so that it can be put out before it has had a chance to spread.

Many places will be found where fires are liable to start, as closets of all sorts and wardrobes, bed curtains, laundries, &c., and an unlimited number of alarms may be placed to insure safety; all the corresponding bells being arranged in one locality, as the oliice of a hotel.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an electric fire alarm; the combination of a pendent alarm head A, provided with automatically closing clips B having serrated meeting edges, clamping plates C and D,`screw E with current wires F F, signal K and battery L, substantially as described.

2. In an electric lire alarm, the combination of a pendent head A provided with spring clips B having their meeting edges serrated, a combustible fragment between said edges, clamping plates C and D holding screw E, and current wires F F, substantially as described.

3. In an electric alarm, the combination of the depending head A provided with spring depending head A provided with spring clips 1o clips B having serrated meeting edges b for B having serrated self-cleansing meeting the purpose set forth,acombustible fragment edges, and clamping plates C and D, subbetween said serrated edges, clamping plates stantially as described.

C and D and screw E, with current wiresF F and post A provided with clamping plates G, AUGUST KRAS PIN H and I and screws J, substantially as de- Witnesses:

scribed. WM. M. MONROE,

4. In an electric alarm, the combination of C. WV. PAINE. 

